Professor Marrot obtains the secret documents containing evidence of the illegal weapon transactions between the French government, in the face of its high official Leroi, and two African countries. Before making the public statement, Marrot finds himself under surveillance. In the critical circumstances his Italian friend and partner Angela takes action and the game continues.

1978, France. Young recruits are secretly digging an underground tunnel to get to the boarding school for girls, located in front of their barracks. Sexual girls are digging a tunnel towards...

Architect Dumas dies from a bullet of his own gun in front of his house. The police suspect his young Swedish wife Catherine and her English lover Tom Hastings. After numerous interrogations, in which they entangle themselves in contradictions, they try to flee, but are soon both caught and brought to trial, he in England, she in France. Only when Catherine keeps on proclaiming her innocence, superintendent Corbier finally considers believing her.

Victor is a screenwriter whose last work about the Marechal Pétain is refused by his producer. To add insult to injury, he tells Victor he is paunchy. The unfortunate man becomes obsessed by his weight. He goes out of his way to lose pounds, abetted by his wife, Corinne, who puts him on a reducing diet. He must also go to a health center where he takes exercise. Nothing really works. And one day, in a brewery, he cannot withstand his diet anymore and he has a gastronomic meal. Desperate, he tries his luck at a weight watchers reunion.

A French police inspector with the help of Tazzi, a woman involved in a prostitution ring, track down the man who murdered Tazzi's sister.